Mac Navicat连接MySQL8.0.11出错：2003 - Can't connect to MySQL server on ……(61 Connection refused)

MySQL8.0.11处于空密码情况下，Navicat for MySQL连接MySQL会出现以下提示：

2003 - Can't connect to MySQL server on '127.0.0.1' (61 "Connection refused")

1、停止mysql，也可在苹果->系统偏好设置->最下边点mysql 在弹出页面中关闭mysql服务（点击stop mysql server）

sudo /usr/local/mysql/support-files/mysql.server stop

2、设置mysql密码，如若忘记密码，可通过下边（第5步）命令重置密码

ALTER user 'root'@'localhost' IDENTIFIED BY '123456'

3、打开Navicat重新连接mysql，输入mysql密码，ok！

4、终端启停mysql：

启动MySQL服务： sudo /usr/local/MySQL/support-files/mysql.server start

停止MySQL服务： sudo /usr/local/mysql/support-files/mysql.server stop

重启MySQL服务： sudo /usr/local/mysql/support-files/mysql.server restart

5、重置MySQL密码：

进入终端输入：

cd /usr/local/mysql/bin/

登录管理员权限，提示输入管理员密码：

sudo su

回车后输入以下命令来禁止mysql验证功能，回车后mysql会自动重启（偏好设置中mysql的状态会变成running）

./mysqld_safe --skip-grant-tables &

./mysql

FLUSH PRIVILEGES;

此处需注意：因为现在是新版本8.0了，老版本的修改密码的语法已不再适用，mysql 5.7.9以后废弃了password字段和password()函数；

mysql> SET PASSWORD FOR 'root'@'localhost' = PASSWORD('123456');

ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'PASSWORD('123456')' at line 1

mysql>ALTER user 'root'@'localhost' IDENTIFIED BY '123456'

密码重置成功，重启mysql即可；

如有其他问题可参考官方文档：

https://dev.mysql.com/doc/refman/8.0/en/default-privileges.html

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Mac Navicat连接MySQL8.0.11出错：2003 - Can't connect to MySQL server on ……(61 Connection refused)

4、终端启停mysql：

5、重置MySQL密码：

如有其他问题可参考官方文档：

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